Juzo Murasaki is a young man traumatized by his experience of bullying at school. He returns to his hometown and takes a job on a building site with his old nemesis Toru Akai. But Juzo's trauma has created a monster; he harbors a second personality, Neighbor No. 13, a vicious, brutal and disfigured character intent on exacting a painful revenge on his bully.

Reiko is attacked by her companion while being ordered by her boss to escort a witness to her murder. There is a terrifying conspiracy within the police

Nozomi Hanada, the underboss of the Kanto Saiseikai Obara Group, lives his life on the path of chivalry while protecting his happy family with his wife Komaki and son Toru. One day, a major incident that shakes the Kanto Yakuza society breaks out. Nishimatsu, the chairman of the Saiseikai, decides to have the popular Obara succeed him, instead of the powerful Fukui. However, the ambitious Fukui is not satisfied with the decision and stabs Nishimatsu to death in order to take the chairman's position. He takes the outrageous step of putting the stigma of parent murder on Obara. Nozomi and his friends decide to fight to live the path of chivalry, but an even more cruel fate befalls them.

After assuming the title of second boss of the Obara Group, Nozomi Hanada begins a counterattack against the Kanto Saiseikai Fukui Group.